3-Bromo-6-(bromomethyl)-2-(difluoromethyl)pyridine-5-acetonitrile
3-Chloro-6-(difluoromethyl)-2-fluoropyridine-5-sulfonyl chloride
5-Chloro-2-(difluoromethyl)-3-fluoropyridine-4-sulfonyl chloride
6-(Bromomethyl)-3-chloro-4-(difluoromethyl)-2-fluoropyridine